These gloss black extended lug bolts feature a 19mm head and spherical ball seat, just like the Porsche factory lug bolts. Threaded portion is 45mm, with 60mm total shaft length. Ideal for use with 8-9mm spacers on Cayenne, or 14-15mm spacers on 911, Boxster, and Cayman. Zinc-coated for corrosion resistance.